What instruction will the nurse give to parents about preventing the spread and reinfection of pinworms?

A. "Give your infant an oral rehydration solution." While rehydration is important, projectile vomiting could indicate a more serious underlying issue that needs medical evaluation.
B. "You might want to try switching to a different formula." Formula intolerance is less likely to cause projectile vomiting. A change in formula should not be suggested without ruling out more serious conditions first.
C. "Bring your infant into the clinic today to be seen." Projectile vomiting in an infant, especially when followed by hunger, can indicate pyloric stenosis, a condition that requires prompt medical evaluation. The infant should be seen by a healthcare provider to determine the cause and initiate appropriate treatment.
D. "Burp your child more frequently during feedings." Burping can help with regular gas and minor feeding issues, but it is unlikely to resolve projectile vomiting.

A. Wash bed linens in cold water. Washing bed linens in cold water is ineffective for killing pinworm eggs. Hot water should be used to properly sanitize linens and kill the eggs.
B. Clean the bathroom with bleach solution. While cleaning the bathroom with bleach can help reduce contamination, it is not a primary or effective measure for preventing pinworm spread and reinfection in a household setting.
C. Keep children's nails short. Keeping nails short reduces the likelihood of the child scratching the perianal area, where pinworm eggs are deposited, and then ingesting the eggs through hand-to-mouth contact. This helps prevent the spread and reinfection of pinworms.
D. Dress child in loose-fitting underwear. Loose-fitting underwear does not specifically help in preventing the spread or reinfection of pinworms. Tight-fitting underwear may actually be better to prevent the spread of eggs to other surfaces.